This is just an initial observation that, when it comes to the basic job of a web browser - namely, displaying a web page - IE 8 beta 2 just seems to fail with some sites, showing only a webpage that's blank page, or that's blank in parts that should have content. (Whereas those pages show up fine in Chrome.)
For instance, here's the Transport for London website as seen in IE8 beta 2 - completely blank!:
And here's the BBC Worldwide's "About" page in IE8:
What I find amusing though - and is it a deliberate "feature", rather than a bug?? - is what Internet Explorer 8 beta 2 does to Google web pages.
F'rinstance, here are the results of a Google search (it was OK when I hit Reload though, but I've had this a few times on searching via Google using IE8):
Furthermore, if you sign out of Gmail / Google Mail and then someone tries to sign back in as a different user, that "Sign in as a different user" link just doesn't work - you're stuck with the previous username, pre-completed and uneditable (scrubbed out below), when you try to go to Gmail, even if you delete all cookies (until you close and re-open IE 8, at least):
And, when I'm writing or editing an email in Gmail / GoogleMail using IE8, sometimes I find I suddenly can't add or edit anything in the text box for writing the body of the email for a few seconds or even longer. (It could be down to Google I suppose, but I've never experienced this issue before using IE 8.)
Well, blanking out, refusing access to and generally scuppering the use of Google sites is certainly one way for Microsoft to shaft one of its big competitors..!
UPDATE: the solution or fix for blank or odd webpages in IE8 is, whenever you get a page that doesn't display properly on IE 8, to click the compatibility button that then appears in the address bar. Unfortunately when you go to another page on the same site you may have to click that button again. And again. But at least it works for the individual page!